MAT LAW for fluid(water or air)

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hi,

I am working on drop test analysis of a bottle carrying a fluid.

For fluid made the hexa elements by referring the tutorial of drop test.

Can we use tetra elements instead of hexa elements?

If yes,there is any difference in final output?

Also suggest the MAT LAW for fluid.

 

 

 

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    Hi Tushar,

     

    LAW 6 Hydro. Compatible with SPH elements.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016
    Altair Forum User said:

    Can we use tetra elements instead of hexa elements?

     

    I think you can use Tetra. I don't see any exception on help regarding element type.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    I think for ALE formulation,it doesn't support tetra elements.

    /MAT/LAW 6 is compatible for fluid. The best approach to model fluid is SPH formulation.

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    Hi,

    If we consider the bottle carrying fluid is SPH elements, then what should be the contact type for bottle and sph elements interface?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited June 2016

    You can try with general purpose contact, which is Type 7.

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